mclachlan and j



1. c. McI ACHLAN AND 1. RUCKS'TINAT.

\ TRACTOR.

' APPLICATION FILED FEB. 26. 1918. 1.325566. Patented Dec. 16,1919.

v 4 SHEETS-SHEET 1.

g Q M x? g B I? 5* N I a a o O c a Q N 1- S DOOO Inventors.

1. c. McLACHLAN AND 1. RUCKSTINAT.

TRACTOR.

APPLICATION FILED FEB. 26, I918.

Patented Dec.16,1919.

4 SHEETSSHEET 2.

Inventors.

1 J. C. McLACHLAN AND J. RUCKSTINAT.

- TRACTOR.

APPLICATION FILED FEB. 26. 1918,

1,325,366. 1 I Patented Dec. 16,1919.

4 SHEETS-SHEET 3.

Inventors. j w/iziomw i j.

J. C. McLACHLAN AND J. RUCKSTINAT.

TRACTOR.

APPLICATION FILED FEB. 26, 1918.

4 SHEETS-SHEET 4.

Inventors.

UNITED STATES PATENT OFFICE.

JOHN C. MCLACHLAN AND ,JOHANNES RUCKSTINAT, OF TORONTO, ONTARIO, CANADA.

TRACTOR.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application filed February 26. 1918. Serial No. 219.183.

To all whom, it may concern:

Be it known that we, JOHN CAMPBELL MCLACHLAN and J OHANXES RUcKsTrNA'r,both subjects of the King of Great Britain, and residents of the city ofToronto, county of York, Province of Ontario, in the Dominion of Canada,have invented certain new and useful Improvements in Tractors, described in the following specification and illustrated in theaccompanying drawings, that form part of the same.

The objects of the invention are, to devise a tractor which will beveryrigid in its construction and compact in form, may be easilyhandledin all classes of work and will not be liable to get out oforder.

. A further and veryimportant object is to so construct a machine astohave the power transmission entirely inclosed and free from detrimentaleffect of external conditions with which machines of this class areconstantly brought into contact.

The principal feature of the invention consists in the novelconstruction and ar rangement of parts, whereby the main frame is formedof a unitary metal casting which supports the entire power unit andtransmission and carries the traction and supporting wheels.

In the accompanying drawings, Figure 1 is a side elevational view of themachine.

Fig. 2 is a plan view.

Fig. 3 is a longitudinal vertical mid-see tional view.

Fig. 4 is a plan view of the main frame and supporting wheels.

Like numerals ofreference indicate corresponding parts in each figure.

Referring to the accompanying drawings, the main frame 1 is formed of asingle metal casting which at the rear end extends the full width of themachine between the drive wheels 2 and is formed with transversebearings 3 in which the axle 4: is journaled, the frame resting upon theaxle and the axle being secured in place by the under cap 5 which issuitably secured to the underside of the main frame by the bolts 6.

The frame 1 is formed with a raised portion 7 centrally of its widthover the axle of the frame. The side walls of the raised center 7 arecarried forward beyond the differential housing and form the side wallsof the gear box 13 in which the change gears 1-1 are arranged.

A transverse partition wall 15 closes the forward'end ofthe gear box andsupports the bearings for the main shaft 16 and jack shaft 17.

The worm casing and gear box are closed at the top by the caps 18 and 19respectively. The side walls of the gear box 13 are continued in anoutward direction to form the clutch housing 20 in which the engine flywheel 21 and a suitable clutch are arranged. The upper portion of thehousing 20 is formed by a cap 22 which is preferably provided with aremovable hand cover 23 which allows of easy inspection and adjustmentof the clutch.

The forward wall 24 of the clutch housing is formed as an integral partwith the frame 1 and the side walls are continued forwardly to form theengine base and crank case 25 having the bearings 26 and 27 supportingthe engine crank shaft 28.

The engine frame 29 carrying the cylinders 30 rests upon the top flangesof the engine base 25 and the engine is thus rigidly secured to theframe of the machine which is a unitary casting from end to end. Theframe extends forwardly beyond the engine base providing accommodationfor the means for driving the magneto, pumps, fan, etc.

The crank shaft is preferably provided with a beveled gear 31 meshingwith the gear 32 which is secured to a shaft 33 supported transverselyof the machine in the bearings 31 formed in the side walls of the frame.

A suitable starting crank 35 is secured to one end of the transverseshaft which allows the operator to stand beside the machine whenstarting and therefore greatly facilitates the starting of the engine inthe event of adjustment being required. This cross shaft is alsoutilized as a power transmitter for utilizing the power of the enginewhile the tractor is at rest having a pulley arranged on the endopposite to the crank.

The radiator 36 is supported on the forward end of the frame and is hereshown of the vertical tubular type having the upper water head 37extending rcarwardly and directly connected to the engine coolingcirculation pipe 38.

I may be opeiating.

The forward end of the machine is supported upon the single Wheel 41which is carried in the yoke 42. This yoke 42 is formed with a flatplate member 43 at the top held in position by the ring flange 44 andsupporting the weight of the frame upon the ball bearings 45,

A laterally extending pair of arms 46 are pivotally connected to anadjustable rod 47 and the opposite end of this rod is connected to thelower end of the steering lever 48 which lever is pivoted to a bracket49 and adapted to be held in fixed positions by a suitable bolt carriedthereon engaging the notched quadrant 50. The steering of the machine,is thus effected by the straight throw of the lever and is very quickand simple in its operation.

A fuel supply tank 51 is supported upon brackets 52 preferably securedto the cap 22 of the clutch housing as being a convenient location. Theclutch is operated by a hand lever supported upon a bracket 54 securedto the top of the gear box cap 19, the lower end of the lever extendingthrough a slot in the top of the gear box. The change gears are operatedby a lever 55 carried on a quadrant bracket 56 also arranged on top ofthe gear box.

A seat 57 is supported from the top of the worm gear cap in such aposition that the driver is accommodated in a comfortable positionwithin easy reach of the various levers.

It will be seen that a machine constructed as described is very rigidbeing formed in a unitary casting extending from end to end and thedriving shaft is carried direct from the engine bearings to thedifferential and is supported in positively alined bearings which arenot subject to any relative racking influence on account of beingcontained within the solid cast frame.

The construction of the device is extremelyv simple and the machine workrequired is reduced to the minimum. The en gine cylinders are supporteddirectly from the main frame of the machine, consequently a great savingin 'material and weight is effected. All the parts are easily accessibleand the whole arrangement constitutes a very compact and simple form oftractor.

What we claim as our invention is v 1. A tractor, comprising. a unitarycasting having alongitudinal depression in the forward end forming theengine crank case, the side walls extending rearwardly and formingpockets for the clutch and change gears, integral transverse wallsdividing the engine crank case, clutch case and gear case, a transversebearing formed at the rear end of said casting, a driving axle journaledin said bearing, and a drive shaft extending longitudinally of saidcasting and journaled in said division walls.

2. A tractor, comprising, a imitary casting having perpendicular sidewalls and transverse division walls integral therewith form ing pocketsin the casting, the forward pocket comprising the engine crank case andthe succeeding pockets forming clutch and gear cases, the rear endhaving a transverse bearing on the under side, an axle support ing saidcasting, a cap holding said axle in place, and a longitudinallyjourna-led shaft operating said axle.

J. C. McLAOI-ILAN. 'J. RUCKSTINAT.

